Intelligent pneumatic suction device for cabin of domestic vehicle

Abstract

In this paper, a smart pneumatic suction device for the cabin of a domestic car has been developed to solve the problem of hidden driving safety and vehicle performance degradation caused by changes in the working environment of the cabin caused by foreign objects trapped in the gap of the cabin. The device consists of a removable suction head, a universal hose, and a foreign body collection It consists of a silo and a negative pressure generator. The control system uses the single-chip K66 core board as the central calculation link, and the digital air pressure sensor is used as the feedback signal mechanism to convert the air pressure signal in the suction head into a digital signal and transmit it to the single chip through the IIC of the single chip; the PWM signal is converted and amplified to Drive the current of the RS-540 DC motor to achieve PID closed-loop control to achieve the effect of controlling the air pressure and stabilizing the air pressure; use the WH148 single-connect potentiometer to form a simple voltage divider circuit, and generate different voltage signals by rotating the potentiometer to achieve continuous adjustment Knob. The device has the characteristics of portability, high efficiency, simple operation, large market potential, and broad development and application prospects.